It depends on the country where your son is from. You should become familiar with the monthly Visa Bulletin that is issued by the Department of State. It gives visa availability in the different preference categories. Depending on the country, the U.S. is providing immigrant visas to unmarried sons and daughters of lawful permanent residents in the Family based 2B category who have priority dates (i.e. the date on which the I-130 was filed) before February 1, 2002 for most countries in the world, to June 15, 1992 for Mexico. In any event, the current waiting time is now in excess of 8 years. The usual strategy is to have you become a U.S. citizen so that your son would then be in the first preference F1 category, which is slightly more available. Another option is to analyze what other visa options your son would have independent of your status.
The Visa Bulletin is available at http://travel.state.gov/visa/frvi/bulletin/bulletin_1360.html.
Scott D. Pollock
Scott D. Pollock & Associates, P.C.
105 W. Madison, Suite 2200
Chicago, IL 60602
fax: (312) 444-1950
Please visit our renovated website at www.lawfirm1.com, which allows client access to case status, enhanced information on services, and other convenient features.